You are a Systems Administrator for a company. There is a need to host a vendor-based product on an EC2 Instance. Due to the nature of the product`s licensing model, you need to ensure that you have control over the number of cores of the underlying hardware. In such a case, which of the following would you consider?

Answer options:

A.Reserved Instances
B.Dedicated Instances
C.Spot Instances
D.Dedicated Hosts

Correct Answer: D
The AWS Documentation mentions the following.
Amazon EC2 Dedicated Hosts allow you to use your eligible software licenses from vendors such as Microsoft and Oracle on Amazon EC2. An Amazon EC2 Dedicated Host is a physical server fully dedicated for your use, so you can help address corporate compliance requirements.
An important difference between a Dedicated Host and a Dedicated instance is that a Dedicated Host gives you additional visibility and control over how instances are placed on a physical server. You can consistently deploy your instances to the same physical server over time. As a result, Dedicated Hosts enable you to use your existing server-bound software licenses and address corporate compliance and regulatory requirements.
Because this is clearly mentioned in the documentation, all other options are invalid.
For more information on dedicated hosts, please refer to the below URL-
https://aws.amazon.com/ec2/dedicated-hosts/